<template>
  <div>
    <div class="user-info-head" @click="editCropper()"><img v-bind:src="options.img" title="点击上传头像" class="img-circle img-lg" /></div>
    <el-dialog :title="title" :visible.sync="open" width="800px" append-to-body @opened="modalOpened"  @close="closeDialog()">
      <el-row>
        <el-col :xs="24" :md="12" :style="{height: '350px'}">
          <vue-cropper
            ref="cropper"
            :img="options.img"
            :info="true"
            :autoCrop="options.autoCrop"
            :autoCropWidth="options.autoCropWidth"
            :autoCropHeight="options.autoCropHeight"
            :fixedBox="options.fixedBox"
            @realTime="realTime"
            v-if="visible"
          />
        </el-col>
        <el-col :xs="24" :md="12" :style="{height: '350px'}">
          <div class="avatar-upload-preview">
            <img :src="previews.url" :style="previews.img" />
          </div>
        </el-col>
      </el-row>
      <br />
      <el-row>
        <el-col :lg="2" :md="2">
          <el-upload action="#" :http-request="requestUpload" :show-file-list="false" :before-upload="beforeUpload">
            <el-button size="small">
              选择
              <i class="el-icon-upload el-icon--right"></i>
            </el-button>
          </el-upload>
        </el-col>
        <el-col :lg="{span: 1, offset: 2}" :md="2">
          <el-button icon="el-icon-plus" size="small" @click="changeScale(1)"></el-button>
        </el-col>
        <el-col :lg="{span: 1, offset: 1}" :md="2">
          <el-button icon="el-icon-minus" size="small" @click="changeScale(-1)"></el-button>
        </el-col>
        <el-col :lg="{span: 1, offset: 1}" :md="2">
          <el-button icon="el-icon-refresh-left" size="small" @click="rotateLeft()"></el-button>
        </el-col>
        <el-col :lg="{span: 1, offset: 1}" :md="2">
          <el-button icon="el-icon-refresh-right" size="small" @click="rotateRight()"></el-button>
        </el-col>
        <el-col :lg="{span: 2, offset: 6}" :md="2">
          <el-button type="primary" size="small" @click="uploadImg()">提 交</el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>

<script>
import store from "@/store";
import { VueCropper } from "vue-cropper";
import { uploadAvatar } from "@/api/system/user";

export default {
    components: { VueCropper },
    props: {
        user: {
            type: Object,
        },
    },
    data() {
        return {
            // 是否显示弹出层
            open: false,
            // 是否显示cropper
            visible: false,
            // 弹出层标题
            title: "修改头像",
            options: {
                img: store.getters.avatar, //裁剪图片的地址
                autoCrop: true, // 是否默认生成截图框
                autoCropWidth: 200, // 默认生成截图框宽度
                autoCropHeight: 200, // 默认生成截图框高度
                fixedBox: true, // 固定截图框大小 不允许改变
            },
            previews: {},
            // 临时头像文件，上传使用
            fileAvatar: null,
            // 自适应弹框宽度
            dialogWidth: 0,
        };
    },
    created() {
        this.setDialogWidth();
    },
    mounted() {
        window.onresize = () => {
            return (() => {
                this.setDialogWidth();
            })();
        };
    },
    methods: {
        // 自适应弹框宽度
        setDialogWidth() {
            console.log(document.body.clientWidth);
            var val = document.body.clientWidth;
            const def = 800; // 默认宽度
            if (val < def) {
                this.dialogWidth = "100%";
            } else {
                this.dialogWidth = def + "px";
            }
        },

        // 编辑头像
        editCropper() {
            this.open = true;
        },
        // 打开弹出层结束时的回调
        modalOpened() {
            this.visible = true;
        },
        // 覆盖默认的上传行为
        requestUpload() {},
        // 向左旋转
        rotateLeft() {
            this.$refs.cropper.rotateLeft();
        },
        // 向右旋转
        rotateRight() {
            this.$refs.cropper.rotateRight();
        },
        // 图片缩放
        changeScale(num) {
            num = num || 1;
            this.$refs.cropper.changeScale(num);
        },
        // 上传预处理
        beforeUpload(file) {
            if (file.type.indexOf("image/") == -1) {
                this.msgError(
                    "文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。"
                );
            } else {
                this.fileAvatar = file;
                const reader = new FileReader();
                reader.readAsDataURL(file);
                reader.onload = () => {
                    this.options.img = reader.result;
                };
            }
        },
        // 上传图片
        uploadImg() {
            this.$refs.cropper.getCropBlob((data) => {
                const formData = new FormData();
                let fileName = this.createPic();
                formData.append("avatarfile", data, fileName);
                uploadAvatar(formData).then((response) => {
                    this.open = false;
                    this.options.img = response.data;
                    store.commit("SET_AVATAR", this.options.img);
                    this.msgSuccess("修改成功");
                    this.visible = false;
                });
            });
        },
        // 实时预览
        realTime(data) {
            this.previews = data;
        },
        // 关闭窗口
        closeDialog() {
            this.options.img = store.getters.avatar;
            this.visible = false;
        },
        //产生随机图片名称
        createPic() {
            var now = new Date();
            var year = now.getFullYear(); //得到年份
            var month = now.getMonth(); //得到月份
            var date = now.getDate(); //得到日期
            var hour = now.getHours(); //得到小时
            var minu = now.getMinutes(); //得到分钟
            month = month + 1;
            if (month < 10) month = "0" + month;
            if (date < 10) date = "0" + date;
            var number = now.getSeconds() % 43; //这将产生一个基于目前时间的0到42的整数。
            var time = year + month + date + hour + minu;
            return time + "_" + number + ".png";
        },
    },
};
</script>
<style scoped lang="scss">
.user-info-head {
  position: relative;
  display: inline-block;
  height: 120px;
}

.user-info-head:hover:after {
  content: '+';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  color: #eee;
  background: rgba(0, 0, 0, 0.5);
  font-size: 24px;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: pointer;
  line-height: 110px;
  border-radius: 50%;
}
</style>
</style>